Grade Percentage Calculator

Enter each assignment with points earned and total points possible to find your overall grade percentage instantly. This grade percentage calculator works for any course that uses points-based grading — from homework and quizzes to midterms and final projects. Switch between US, UK, and Australian grading scales to see your letter grade in any system.

How to Calculate Your Grade Percentage in 3 Steps

1. Enter your assignment details. Type each assignment name into the first column, then enter the points you earned and the total points possible. The calculator starts with four example assignments to show how it works — edit or delete them and add your own by clicking Add Assignment.

2. Choose your grading scale. Click the scale tabs above the calculator to switch between US Standard (A = 90%+), Plus/Minus (A+ through D-), UK (First, 2:1, 2:2, Third), or Australian (HD, D, CR, P). Your letter grade and the grading scale table update instantly when you switch.

3. Review your results. Your overall percentage appears in the Quick Stats bar and the grade ring as you type. Scroll down for threshold bars showing how close you are to each grade boundary, what-if scenarios for your next assignment, and charts breaking down your performance. Results update instantly as you type — no button needed.

How Is Percent Grade Calculated? Formula & Worked Example

The grade percentage formula divides your total earned points by total possible points, then multiplies by 100. This formula treats every point equally — a point earned on a 50-point homework counts the same as a point earned on a 100-point midterm.

The calculation sums all your individual assignment scores into one fraction. The numerator is everything you earned; the denominator is everything you could have earned. Multiply by 100 to convert the decimal to a percentage.

Notice the midterm has the most impact because it has the most possible points — 100 out of 215 total, nearly half the grade. If your course uses category weights instead of raw points (such as Homework worth 20% and Exams worth 40%), use our grade calculator for weighted categories. For grading a single test by number of questions right, our test grade calculator handles that directly.

Grade Percentage Chart: What Letter Grade Is Your Score?

Your letter grade depends on which grading scale your school uses. The same percentage can earn different letter grades depending on the system, so knowing your school’s scale matters.

In the US Standard 10-point scale, grade boundaries fall at every 10 percentage points: A starts at 90%, B at 80%, C at 70%, and D at 60%. This is the simplest system and the most common in US high schools. The Plus/Minus scale adds granularity with modifiers — an A- starts at 90%, an A at 93%, and an A+ at 97%. Most US colleges use this scale, and the modifiers affect GPA calculations because an A- is 3.7 instead of 4.0.

UK universities use a completely different structure. A First Class Honours starts at just 70%, which would only be a C- in the US Plus/Minus system. A 2:1 (Upper Second) starts at 60%, and a 2:2 (Lower Second) at 50%. Students converting between systems should check our grading scale guide for detailed comparisons.

Australian universities use HD (High Distinction) at 85%, D (Distinction) at 75%, CR (Credit) at 65%, and P (Pass) at 50%. This system sits between the US and UK scales in terms of grade boundaries.

The grading scale table below this calculator updates when you switch tabs, showing the full grade-to-percentage mapping for your selected system. Understanding where your percentage falls helps you set realistic targets for remaining assignments.